Lubrication controlling method for starting clutch

Abstract

A lubrication controlling method for a starting clutch including a wet type multi-plate clutch disposed between a transmission and an engine of a vehicle and adapted to transmit a power, the method including always supplying lubricant oil during an operation of the wet type multi-plate clutch, continuously changing a flow amount of the lubricant oil in accordance with a condition of the wet type multi-plate clutch, and controlling the amount of the lubricant oil so that a supplied amount of the lubricant oil during an idle rotation of the wet type multi-plate clutch is greater than a supplied amount of the lubricant oil during the complete engagement of the wet type multi-plate clutch.

1. A lubrication controlling method for a starting clutch including a wet type multi-plate clutch disposed between a transmission and an engine of a vehicle and adapted to transmit a power, comprising the steps of:
 continuously supplying lubricant oil during an operation of the wet type multi-plate clutch; 
 continuously changing a flow amount of the lubricant oil in accordance with a condition of the wet type multi-plate clutch; and 
 controlling the amount of the lubricant oil so that a supplied amount of the lubricant oil during an idle rotation of the wet type multi-plate clutch is greater than a supplied amount of the lubricant oil during complete engagement of the wet type multi-plate clutch, 
 wherein the controlling is performed so that when a monitored tightening pressure of the wet type multi-plate clutch is below a first set value capable of running the vehicle at a low speed, the flow amount of the lubricant oil is maximized, when the monitored tightening pressure is above a second set value for tightening the wet type multi-plate clutch completely, the flow amount of the lubricant oil is minimized, and when the monitored tightening pressure is between the first and second set values, the flow amount of the lubricant oil is changed continuously in accordance with change in the monitored tightening pressure. 
 
     
     
       2. A lubrication controlling method according to  claim 1 , wherein the step for continuously changing the flow amount of the lubricant oil is performed by controlling a flow control valve by an operating pressure of a piston for operating the wet type multi-plate clutch. 
     
     
       3. A lubrication controlling method according to  claim 1 , wherein the step for continuously changing the flow amount of the lubricant oil is performed such that the flow amount changes linearly with respect to the monitored tightening pressure.